Anti-jamming ratchet-type tensioning device
AssigneeNingbo Xuding Rigging Co., Ltd
InventorZhengbao Jin
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an anti-jamming ratchet-type tensioning device, comprising a base, a winding and unwinding mechanism with a ratchet wheel, and an operating mechanism. The operating mechanism controls locking or unlocking via a lever element, with an elastic check claw provided at the executing end of the lever element to prevent reverse rotation of the ratchet wheel. The key feature lies in the design of the lever element's pivot point as a movable structure. When the ratchet wheel rotates clockwise and pushes the check claw, the lever element can move upward with the thrust to avoid obstruction, reducing frictional resistance, effectively preventing jamming, and ensuring smooth and effortless webbing extraction.
Claims15
An anti-jamming ratchet-type tensioning device, comprising:
- a base;
- and
- a winding and unwinding mechanism disposed on the base, wherein
- the winding and unwinding mechanism comprises:
- a ratchet wheel equipped with gear teeth;
- and
- an operating mechanism disposed on the base, with a moving area formed on the operating mechanism;
- and
- a lever element pivotally connected to the operating mechanism, wherein
- the lever element comprises:
- a pressing end;
- and
- an executing end;
- and
- an elastic check claw disposed on the executing end, wherein the elastic check claw is located within a rotation radius of the ratchet wheel and configured to prevent reverse rotation of the ratchet wheel;
- and
- a support member passing through the moving area, wherein a gap exists between an inner wall of the moving area and the support member, allowing limited movement of the support member within the moving area, and meanwhile the pressing end and the executing end pivot on the support member to form a lever, such that pressing the pressing end causes the executing end to lift, and the elastic check claw is positioned outside the rotation radius of the ratchet wheel;
- and
- wherein when the ratchet wheel rotates clockwise and impacts the elastic check claw, an impact force is transmitted through the elastic check claw and the lever element to the support member, driving the support member to move within the moving area and causing the elastic check claw to produce an instantaneous avoidance displacement relative to the ratchet wheel, such that the gear teeth maintain a non-rigid contact as sliding past the elastic check claw, thereby reducing frictional resistance and avoiding jamming.
Dependencies are inferred from the claim text.